<script setup lang="ts">
import { User, Lock } from '@element-plus/icons-vue'
import { reactive, ref } from 'vue';
//引入用户相关的小仓库
import useUserStore from '@/stores/modules/user'
import { ElNotification } from 'element-plus';
import { useRouter, useRoute } from 'vue-router';


//引入获取当前时间的函数
import { getTime } from '@/utils/time'

// 收集表单的信息用于提交
let loginForm = reactive({ username: 'admin', password: '111111' })

const userStore = useUserStore()
const loading = ref(false)
const router = useRouter()
const route = useRoute()
const login = async () => {
    loading.value = true
    //点击登录按钮以后干什么?
    //通知仓库发登录请求 
    //请求成功->首页展示数据的地方
    //请求失败->弹出登录失败信息
    try {

        //保证登录成功
        await userStore.userLogin(loginForm)
        //编程式导航跳转到展示数据首页
        // 判断路径是否有query参数，有表示退出时候携带的当时页面路径
        let redirect: any = route.query.redirect
        router.push({ path: redirect || '/' })
        //判断登录的时候,路由路径当中是否有query参数，如果有就往query参数挑战，没有跳转到首页
        //登录成功提示信息
        ElNotification({
            type: 'success',
            message: '欢迎回来',
            title: `HI,${getTime()}好`,
        })
        //登录成功加载效果也消失
        loading.value = false
    } catch (error) {
        //登录失败加载效果消息
        loading.value = false
        //登录失败的提示信息
        ElNotification({
            type: 'error',
            message: (error as Error).message,
        })
    }
}

//自定义校验规则函数
const validatorUserName = (rule: any, value: any, callback: any) => {
    //rule:即为校验规则对象
    //value:即为表单元素文本内容
    //函数:如果符合条件callBack放行通过即为
    //如果不符合条件callBack方法,注入错误提示信息
    if (value.length >= 5) {
        callback()
    } else {
        callback(new Error('账号长度至少五位'))
    }
}

const validatorPassword = (rule: any, value: any, callback: any) => {
    if (value.length >= 6) {
        callback()
    } else {
        callback(new Error('密码长度至少六位'))
    }
}

//定义表单校验需要配置对象
const rules = {
    //规则对象属性:
    //required,代表这个字段务必要校验的
    //min:文本长度至少多少位
    //max:文本长度最多多少位
    //message:错误的提示信息
    //trigger:触发校验表单的时机 change->文本发生变化触发校验,blur:失去焦点的时候触发校验规则
    username: [
        // { required: true, min: 6, max: 10, message: '账号长度至少六位', trigger: 'change' }
        { trigger: 'change', validator: validatorUserName },
    ],
    password: [
        // { required: true, min: 6, max: 15, message: '密码长度至少6位', trigger: 'change' }
        { trigger: 'change', validator: validatorPassword },
    ],
}
</script>
<template>
    <div class="login-container">
        <el-row>
            <el-col :span="12" :xs="0"></el-col>
            <el-col :span="12">
                <el-form class="login-form" :model="loginForm" :rules="rules">
                    <h1>Hello</h1>
                    <h2>欢迎来到硅谷甄选</h2>
                    <el-form-item prop="username">
                        <el-input :prefix-icon="User" v-model="loginForm.username"></el-input>
                    </el-form-item>
                    <el-form-item prop="password">
                        <el-input :prefix-icon="Lock" type="password" v-model="loginForm.password"
                            show-password></el-input>
                    </el-form-item>
                    <el-form-item>
                        <el-button class="login-btn" type="primary" @click="login" :loading="loading">登录</el-button>
                    </el-form-item>
                </el-form>
            </el-col>
        </el-row>
    </div>
</template>
<style lang="scss" scoped>
.login-container {
    width: 100%;
    height: 100vh;
    background: url('@/assets/images/background.jpg') no-repeat;
    background-size: cover;

    .login-form {
        width: 80%;
        background: url('@/assets/images/login_form.png') no-repeat;
        background-size: cover;
        position: relative;
        top: 30vh;
        padding: 40px;

        h1 {
            font-size: 40px;
            color: #fff;
        }

        h2 {
            font-size: 20px;
            color: #fff;
            margin: 20px 0;
        }

        .login-btn {
            width: 100%;
        }
    }
}
</style>